auth: Fixed crash with DIGEST-MD5 when attempting to do master user login without master passdbs.
auth: Fixed crash with DIGEST-MD5 when attempting to do master user login without master passdbs.

jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jkerihuel/dovecot